ML13302A321
| ML13302A321 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 08/24/1979 |
| From: | Baer R Office of Nuclear Reactor Regulation |
| To: | James Drake, Gilman B SAN DIEGO GAS & ELECTRIC CO., SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| NUDOCS 7910100439 | |
| Download: ML13302A321 (5) | |
Text
Distribution Docket File LWR #2 File AUG 2 4 I9 Local POR NRC PDR RLBaer HRood Docket Nos. 40361 JLee and OELD Mr. J
.Drake Mr. B. '.
GiTman Vice President Senior Vice President - Operations Southern California Edison Company San Diego Gas and Electric Company 2244 Walnut Grove Avenue 101 Ash Street P. O. Box 300 P. 0. Box 300 Rosemead, California 91770
- Rosemead, California 91770 Gentlemen:
SUSJECT:
SECONDARY WATER CHEMISTRY CONTROL (San Cncfre Nuclear Generating Station, Units 2 and 3)
(In late 1975 we incorporated provisions into the Standard Technical Specifi cations (STS) that required limiting corditions.for operation and surveillance requirmnents for secondary water chemistry parameters. The proposed Technical Specifications for you.r plant(s), as well as for other Pressurized Water Plants that have been issued an Operating License since 1974 or are now under review for an Operating License, contain either tiese provisions or a requirement to establish these provisions after baseline chemistry conditions have been detemined.
The intent of the provisions was to provide added assurance that the operators of newly licensed plants would properly monitor and control secondary water chemistry-to limit corrosion of steam generator tubes.
In a number of instances the Technical Specifications have significantly restricted the operational flexibility of some plants with little or no benefit with recard to limiting corrosion of steam generator tubes. Based on this experience and the knowledge gained in recent years, we have concluded that Technical Specification limits are not the most effective way of assuring that steam generator tube corrbsion will be minimized.
othe complxit ofthe corrcsion phenomena i nvclve and td e state rt as i exiZs tCay, we
'I ieve that, in lieu of Technical cc iion that requires the i of a seconcary :,ater cherF.istry
.aliitori ng and control progran containing appropriate prccatures anc man a
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The required program and procedures wculd 'e developed by the licensee (or applicant) with any needed input from their reactor vendors or other consultants, and thus. could more readily account for site and plant-specific factors that affect chemistry conditions in the steam generators. -In our view, plant operation following such procedures would provide assurance that licensees would devote proper attention to controlling secondary water chemistry, while also providing the needed flexibility to allow them to deal more effectivelywithany off-normal conditions that miqht arise.
Consequently, we request that, you amend your FSAR to include your proposed secondary water chemfstry program which will be referenced in-a condition.
to your operating license and will replace any proposed Technical Specifi cations on secondary water chemistry. A model license condition is enclosed.
'-e have concluded that such a license condition, in conjunction With existing Technical Specifications on steam generator tube leakage and inservice inspec tion, would providAe the most practical and comprehensive means of assuring that steamn generator tube integrity wmould be raintained.
If you have any questions, please contact us.
Sincerely, Orglnal signed liM' R. A. Benedics Robert L. Ba& t hie f Liglht Water Reactors 3ranch N'o.
2 Division of Project Management
Enclosure:
odel License Condition cc W/enclosure:
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76
AUG 2 4 1
-Mr, James H. Drake Vice President Southern California Edison Company 2244 Walnut Grove Avenue P. 0. Box 800 Rosemead, California 91770 Mr. B. W. Gilman Senior Vice President -
Operations San Diego Gas and Electric Company 101 Ash Street P. 0. Box 1831 San Diego, California 92112 cc:
Charles R. Kocher, Esq.
James A. Beoletto, Esq.
Southern California Edison Company 2244 Walnut Grove Avenue P. 0. Box 800 Rosemead, California 91770 Chickering and Gregory ATTN:
David R. Pigott, Esq.
Counsel for San Diego Gas
& Electric Company and Southern California Edison Company Three Embarcadero Center, 23rd Floor San Francisco, California 94112 Mr. Kenneth E. Carr City Manager City of. San Clemente 100 Avenido Presidio San Clemente, California 92672 Alan R. Watts, Esq.
Rourke & Woodruff 1055 North Main Street Suite 1020 Santa Ana, California 92701 Lawrence Q. Garcia, Esq.
California Public Utilities Commission 5066 State Building San Francisco, California 94102
Mr.
James H. Drake AUG 2 4 1979 Mr. B. W. Gilman cc:
Mr. R. W. DeVane, Jr.
Combustion Engineering, Inc.
1000 Prospect Hill Road Windsor, Connecticut 06095 Mr. P. Dragolovich Bechtel Power Corporation P. 0. Box 60860, Terminal Annex Los Angeles, California 90060 Mr. Mark Medford Southern California Edison Company 2244 Walnut Grove Avenue P. 0. Box 800 Rosemead, California 91770 Henry Peters San Diego Gas & Electric Company Post Office Box 1831 San Diego, California 92112 Ms.
Lyn Harris Hicks Advocate for GUARD 3908 Calle Ariana San Clemente, California 92672 Richard J. Wharton,. Esq.
4655 Cass Street, Suite 304 San Diego, California 92109 Phyllis M. Gallagher, Esq.
Suite 220 615 Civic Center Drive West Santa Ana, California 92701 Mr. Robert J. Pate United States Nuclear Regulatory Commission P. 0. Box 4167 San Clemente, California 92672
ENCLOSURE MODEL LICENSE CONDITION SECONDARY WATER CHEMISTRY MONITORING The licensee shall implement a secondary water chemistry monitoring program in accordance with (reference Licensee's Procedure) to inhibit steam generator tube degradation. This program includes:
- 1. Identification of a sampling schedule for the critical parameters and of control points for these parameters;
- 2. Identification of the procedures used to measure the value of the critical parameters;
- 3. Identification of process sampling points;
- 4. Procedure for the recording and management of data;
- 5. Procedures defining corrective actions for off-control point chemistry conditions; and
- 6. A procedure identifying (1) the authority responsible for the interpretation of the data and (2) the sequence and timing of administrative events required to initiate corrective action.